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房建材料及制品
袁佳佳,王洪欣,陈培潮,孙占琦,祝传新,周文龙,刘飞海
摘 要:基于项目的绿色快速建造需求,提出了一种适用于高层工业厂房的免模、免支撑装配整体式框架-现浇剪力墙结构体系(由带牛腿的预制混凝土柱、现浇剪力墙、带牛腿或挑耳的预制叠合梁和预应力空心板构成的体系)。工程应用效果表明:通过在预应力空心板板顶设置后浇叠合层、布置单层双向钢筋,有效提高了楼盖整体性;通过在预应力空心板板端上部开槽,端部布置钢筋桁架或钢筋网,端部浇筑密实,避免了预应力空心板在极端工况下脱落。同时,有限元分析结果表明:通过上述构造措施还可提高楼盖的整体性和抗震性。
Abstract: Based on the green and rapid construction requirements of the project, a temlate-free and support-free assembly monolithic frame-cast-in-place shear wall structure system is proposed suited for high-level factories. The structure system consists of prefabricated columns with corbels, cast-in-place shear walls, laminated beams with corbels or pick ears, and prestressed hollow-core slabs. The engineering application effect shows that laying out the cast-in-place laminated layer and single-layer two-way reinforcements on the top of the hollow-core slab can improve the floor integrity. Sloting at the upper end of the hollow-core slab and placing reinforcements truss or mesh and then pouring concrete densely,can effectively prevent the hollow-core slab falling off. The finite element analysis results show that through these structural measures above can improve the integrity and seismic resistance of the floor.
袁佳佳,王洪欣,陈培潮,等.新型装配式混凝土结构体系在高层工业厂房中的应用研究[J].混凝土与水泥制品,2023(4):63-67.
YUAN J J,WANG H X,CHEN P C,et al.Application Research on the New Prefabricated Structural System of the High-Level Factory[J].China Concrete and Cement Products,2023(4):63-67.
严舒云,邵永健,谢 强
摘 要:为研究倒L型钢混凝土梁的受力性能,结合相关试验研究,采用 ABAQUS有限元软件对5个试件作了建模分析,研究了混凝土强度、箍筋间距、纵筋配筋率、型钢型号、型钢与混凝土粘结滑移建模方法等对倒L形梁抗扭性能的影响。结果表明:混凝土强度等级对试件的极限承载力影响较大,但对试件延性和耗能能力的影响较小;纵筋配筋率对试件抗扭能力几乎没有影响;减小箍筋间距、提高型钢型号可以提升试件的延性和承载力;型钢-混凝土界面采用内聚力模型较摩擦接触模型的精度更高,但是计算成本相对较大,参数获取复杂。
Abstract: In order to study the mechanical properties of inverted L-shaped steel reinforced concrete beams, based on the experiments research of five inverted L-shaped steel reinforced concrete beams, the ABAQUS software was used to model and analyze the five specimens. The effects of concrete strength, stirrup spacing, longitudinal reinforcement ratio, section steel type, and modeling method of bond slip between section steel and concrete on the torsional behavior of inverted L-shaped beams are analyzed. The results show that the strength grade of concrete has a great influence on the ultimate bearing capacity of the specimen, but has a small impact on the ductility and energy consumption capacity of the specimen. The ratio of longitudinal reinforcement has little effect on the torsion resistance of the specimen. The ductility and bearing capacity of the specimen can be improved by reducing the number of stirrups and increasing the type of section steel. The cohesion model adopted for the steel-concrete interface is more accurate than the friction contact model, but the calculation cost is large and the parameter acquisition is complex.
严舒云,邵永健,谢强.基于ABAQUS的倒L形型钢混凝土梁受扭性能研究[J].混凝土与水泥制品,2023(4):68-73,80.
YAN S Y,SHAO Y J,XIE Q.Research on Torsional Behavior of Inverted L-Shaped Steel Reinforced Concrete Beams Based on ABAQUS[J].China Concrete and Cement Products,2023(4):68-73,80.
何建鑫,韩启浩,朱南海,YASIR Naeem
摘 要:基于试验研究和数值模拟分析,梳理了国内外带消能部件的装配式混凝土框架结构抗震性能研究现状,针对存在的问题给出了相应建议,可为带消能部件在装配式混凝土框架结构中的应用研究提供参考。
Abstract: Based on the experimental research and numerical simulation, the research status of precast concrete frame joints and frame structures with energy dissipation members in China and abroad are summarized. The existing problems are pointed out and the corresponding suggestions are proposed, which can provide reference for promoting the development and application of precast concrete frame structures with energy dissipation members.
何建鑫,韩启浩,朱南海,等.带消能部件的装配式混凝土框架结构抗震性能研究进展[J].混凝土与水泥制品,2023(4):74-80.
HE J X,HAN Q H,ZHU N H,et al.Research Progress on the Seismic Performance of Precast Concrete Frame Structure with Energy Dissipation Parts[J].China Concrete and Cement Products,2023(4):74-80.